For those of you who are interested, I've made a set of tech trees updated for the most recent patch. (And trying to follow more specific rules for spatial arrangement than the ones on the wiki.)

I would upload them to the wiki, but it isn't publicly accessible, so I made an imgur album of them. You can find it here: http://imgur.com/a/lHyfZ

The rules I used for arranging are listed on the album, but in case you want to see them without clicking through:

1) A higher-tier source is always lower.
2) A transmuted source is always lower than what it transmuted from.
3) To the best of my ability, the left-right axis represents roughly how much they produce what resource. For plants, left is food, right is tech. For animals, left is food, right is wealth. For minerals, left is wealth, right is tech. The far left and far right columns should be 100% that resource. I tried to make notes when I was unable to arrange things that way, but I may have missed something.
4) When it didn't conflict with the above points, I tried to keep the graph planar.